(19)

(11)

EP 2 795 118 A1

(12)

(43) Date of publication: 29.10.2014 Bulletin 2014/44 (21) Application number: 12810051.8 (22) Date of filing: 19.12.2012

(51) International Patent Classification (IPC):  F03D 11/00(2006.01) F03D 1/06(2006.01) (86) International application number: PCT/DK2012/050477 (87) International publication number: WO 2013/091648 (27.06.2013 Gazette 2013/26)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 21.12.2011 DK 201170738 23.12.2011 US 201161579658 P (71) Applicant: Vestas Wind Systems A/S 8200 Aarhus N (DK)	(72) Inventors: LAURITSEN, Steen M. DK-8250 Egå (DK) ROMBLAD, Jonas DK-8240 Risskov (DK) (74) Representative: Jackson, Richard David  Vestas Wind Systems A/S Hedeager 42 8200 Aarhus N. 8200 Aarhus N. (DK)